1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.vpndialogs; 18 19 import android.content.Context; 20 import android.content.DialogInterface; 21 import android.net.IConnectivityManager; 22 import android.os.Handler; 23 import android.os.Message; 24 import android.os.ServiceManager; 25 import android.os.SystemClock; 26 import android.util.Log; 27 import android.view.View; 28 import android.widget.TextView; 29 30 import com.android.internal.app.AlertActivity; 31 import com.android.internal.net.VpnConfig; 32 33 import java.io.DataInputStream; 34 import java.io.FileInputStream; 35 36 public class ManageDialog extends AlertActivity implements 37 DialogInterface.OnClickListener, Handler.Callback { 38 private static final String TAG = "VpnManage"; 39 40 private VpnConfig mConfig; 41 42 private IConnectivityManager mService; 43 44 private TextView mDuration; 45 private TextView mDataTransmitted; 46 private TextView mDataReceived; 47 private boolean mDataRowsHidden; 48 49 private Handler mHandler; 50 51 @Override 52 protected void onResume() { 53 super.onResume(); 54 55 if (getCallingPackage() != null) { 56 Log.e(TAG, getCallingPackage() + " cannot start this activity"); 57 finish(); 58 return; 59 } 60 61 try { 62 63 mService = IConnectivityManager.Stub.asInterface( 64 ServiceManager.getService(Context.CONNECTIVITY_SERVICE)); 65 66 mConfig = mService.getVpnConfig(); 67 68 // mConfig can be null if we are a restricted user, in that case don't show this dialog 69 if (mConfig == null) { 70 finish(); 71 return; 72 } 73 74 View view = View.inflate(this, R.layout.manage, null); 75 if (mConfig.session != null) { 76 ((TextView) view.findViewById(R.id.session)).setText(mConfig.session); 77 } 78 mDuration = (TextView) view.findViewById(R.id.duration); 79 mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted); 80 mDataReceived = (TextView) view.findViewById(R.id.data_received); 81 mDataRowsHidden = true; 82 83 if (mConfig.legacy) { 84 mAlertParams.mTitle = getText(R.string.legacy_title); 85 } else { 86 mAlertParams.mTitle = VpnConfig.getVpnLabel(this, mConfig.user); 87 } 88 if (mConfig.configureIntent != null) { 89 mAlertParams.mPositiveButtonText = getText(R.string.configure); 90 mAlertParams.mPositiveButtonListener = this; 91 } 92 mAlertParams.mNeutralButtonText = getText(R.string.disconnect); 93 mAlertParams.mNeutralButtonListener = this; 94 mAlertParams.mNegativeButtonText = getText(android.R.string.cancel); 95 mAlertParams.mNegativeButtonListener = this; 96 mAlertParams.mView = view; 97 setupAlert(); 98 99 if (mHandler == null) { 100 mHandler = new Handler(this); 101 } 102 mHandler.sendEmptyMessage(0); 103 } catch (Exception e) { 104 Log.e(TAG, "onResume", e); 105 finish(); 106 } 107 } 108 109 @Override 110 protected void onPause() { 111 super.onPause(); 112 if (!isFinishing()) { 113 finish(); 114 } 115 } 116 117 @Override 118 public void onClick(DialogInterface dialog, int which) { 119 try { 120 if (which == DialogInterface.BUTTON_POSITIVE) { 121 mConfig.configureIntent.send(); 122 } else if (which == DialogInterface.BUTTON_NEUTRAL) { 123 if (mConfig.legacy) { 124 mService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN); 125 } else { 126 mService.prepareVpn(mConfig.user, VpnConfig.LEGACY_VPN); 127 } 128 } 129 } catch (Exception e) { 130 Log.e(TAG, "onClick", e); 131 finish(); 132 } 133 } 134 135 @Override 136 public boolean handleMessage(Message message) { 137 mHandler.removeMessages(0); 138 139 if (!isFinishing()) { 140 if (mConfig.startTime != -1) { 141 long seconds = (SystemClock.elapsedRealtime() - mConfig.startTime) / 1000; 142 mDuration.setText(String.format("%02d:%02d:%02d", 143 seconds / 3600, seconds / 60 % 60, seconds % 60)); 144 } 145 146 String[] numbers = getNumbers(); 147 if (numbers != null) { 148 // First unhide the related data rows. 149 if (mDataRowsHidden) { 150 findViewById(R.id.data_transmitted_row).setVisibility(View.VISIBLE); 151 findViewById(R.id.data_received_row).setVisibility(View.VISIBLE); 152 mDataRowsHidden = false; 153 } 154 155 // [1] and [2] are received data in bytes and packets. 156 mDataReceived.setText(getString(R.string.data_value_format, 157 numbers[1], numbers[2])); 158 159 // [9] and [10] are transmitted data in bytes and packets. 160 mDataTransmitted.setText(getString(R.string.data_value_format, 161 numbers[9], numbers[10])); 162 } 163 mHandler.sendEmptyMessageDelayed(0, 1000); 164 } 165 return true; 166 } 167 168 private String[] getNumbers() { 169 DataInputStream in = null; 170 try { 171 // See dev_seq_printf_stats() in net/core/dev.c. 172 in = new DataInputStream(new FileInputStream("/proc/net/dev")); 173 String prefix = mConfig.interfaze + ':'; 174 175 while (true) { 176 String line = in.readLine().trim(); 177 if (line.startsWith(prefix)) { 178 String[] numbers = line.substring(prefix.length()).split(" +"); 179 for (int i = 1; i < 17; ++i) { 180 if (!numbers[i].equals("0")) { 181 return numbers; 182 } 183 } 184 break; 185 } 186 } 187 } catch (Exception e) { 188 // ignore 189 } finally { 190 try { 191 in.close(); 192 } catch (Exception e) { 193 // ignore 194 } 195 } 196 return null; 197 } 198 } 199
